I lucked out and have 2 free plans that have bonus storage from various promotions. I get about 25 GB per account. I haven't maxed either one.
I absolutely love the product. My wife scans a file, I can grab it right away. I'm at work and need some document (e.g., my driver's license photo), I hop on the website and download it.
I pay $5 for backblaze to backup 5TB. I don't want to spend $10 a month for storage I'll never use (I couldn't even keep that much synced on most of my devices) but I'd gladly pay $3-5 a month for 50-100GB.
For now, I'll keep mooching with my free plan.